EP 2811481 B1 20170712 - VIDEO DISPLAY CONTROL DEVICE
Title (en)
VIDEO DISPLAY CONTROL DEVICE
Title (de)
STEUERVORRICHTUNG FÜR EINE VIDEOANZEIGE
Title (fr)
DISPOSITIF DE COMMANDE D'AFFICHAGE VIDÉO
Publication
Application
Priority
- JP 2012021922 A 20120203
- JP 2013000209 W 20130117
Abstract (en)
[origin: EP2811481A1] A video display control device includes a video signal processing section that corrects a video signal based on control data generated by a control data generating section and outputs a video signal after correction to a display, and a backlight controlling section that controls a light emission amount of a backlight based on a difference between a mean luminance of the video signal and a mean luminance of the video signal after correction. The control data generating section allocates to a low gradation region of the video signal a high gradation region dynamic range of the video signal in which a video signal corresponding to a black band region is excluded. The backlight controlling section controls a light emission luminance of the backlight so as to cancel out an increase or a decrease in the mean luminance of the video displayed on a screen, according to an increase or a decrease in the mean luminance of the video signal after correction with respect to the mean luminance of the video signal.
IPC 8 full level
H04N 5/16 (2006.01); G09G 3/34 (2006.01); H04N 5/57 (2006.01); H04N 5/74 (2006.01); H04N 21/431 (2011.01)
CPC (source: EP US)
G09G 3/3406 (2013.01 - EP US); H04N 5/165 (2013.01 - US); H04N 5/57 (2013.01 - US); H04N 5/7408 (2013.01 - US); H04N 21/4318 (2013.01 - EP US); G09G 2320/0633 (2013.01 - EP US); G09G 2320/066 (2013.01 - EP US); G09G 2320/0673 (2013.01 - EP US); G09G 2330/023 (2013.01 - EP US); G09G 2340/0442 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2811481 A1 20141210; EP 2811481 A4 20141210; EP 2811481 B1 20170712; CN 104106109 A 20141015; CN 104106109 B 20170606; JP 6226186 B2 20171108; JP WO2013114805 A1 20150511; US 2015042884 A1 20150212; US 9288426 B2 20160315; WO 2013114805 A1 20130808
DOCDB simple family (application)
EP 13743199 A 20130117; CN 201380007236 A 20130117; JP 2013000209 W 20130117; JP 2013556237 A 20130117; US 201314376034 A 20130117